IBM 1800409-001A - Manual (Page 74)

7. Slide the filled cassette into the printer (fig. 2.33) until it snaps
firmly into place and is flush with the front of the printer.
Fig. 2.33 Slide the Cassette into the Printer
Chapter 2
2 - 4 2 I n i t i a l P r i n t e r S e t u p